Combined condensing and evaporating apparatus for ice-making machines.



C. SENSSENBEENNER. COMBINED GONDENSING AND EVAPORATING APPARATUS FOR ICEMAKING MAGHINES.

APPLICATION FILED 001*.5, 1909. 1,017,695. Patented Feb.20, 1912.

UNITED STATES *PATENT OFFICE.-

CARL SEN SSEN BRENNER, OF DUSSELDORF-OBERKASSEL, GERMANY.

COMBINED CONDENSING AN D EVAPORATIN G APPARATUS FOR ICE-MARIN GMACHINES.

Specification of Letters Patent.

Application filed October 5, 1909. Serial No. 521,154.

To all whom it may concern:

Be it known that I, CARL SENSSENBREN- NER, manufacturer, a subject ofthe King of Prussia, residing at No. 73 A-rminiusstrasse,Dusseldorf-Oberkassel, Germany, have invented new and usefulImprovements in Combined Condensing and Evaporating Apparatus forIce-Making Machines, of which the following is a specification.

In small ice-making machines, as is" well known, two vessels areemployed for recovering the ammonia. The latter is .firstly separatedfrom its solution in a distillingvessel, with the aid of heat andpressure, and is subsequently liquefied again by cooling.

The subject of the present invention is an apparatus by means of whichboth the liquefaction and the evaporation of the ammonia are essentiallyaccelerated. This is effected by the provision in the condenser of acooling-vessel, which is furnished externally with annular cooling-ribs,directed upwardly 1n inclined direction. These'ribs constitute cups ortrays, as it were, to catch up the liquid ammonia which is deposited inthe cooler.

A practical embodiment of the invention is illustrated in theaccompanying drawing, in which the figure is a vertical section.

In the evaporator a, to which the ammonia solution is supplied, there islocated a heating-coil b, and the chamber 0 of the eva oratorcommunicates with the chamber 1 o the superimposed condenser d by meansof a passage 6, conducting through the cover of the evaporator a andbottom of the condenser d. In the condenser there is tightly fitted avessel 9, whose outer wall, within the chamber f, is furnished withupwardly inclined annular ribs h, constituting cups or trays for theammonia deposited on a cooling-agent being conducted into the vessel 9.

i is a water supply-pipe and h an overflow-pipe for the vessel g.

When the apparatus 18 set 111- operatlon, a strongly saturated ammoniasolution is contained in the evaporator a. Steam is then -conductedthrough the worm 6, whereby this solution is heated, and the ammoniawhich is thus liberated escapes through the passage 6 into the chamber fof the condenser d, where it comes in contact with the cooler g, and itsribs k. If, now, coolingwater is allowed to enter the vessel 9, through.the pipe 2', this vessel g, together with the ribs 11, will assume thetemperature of this coolingwater. This will result in ammonia in liquidform being deposited from the gas on the outside of the vessel 9, whichammonia will collect in the cups or trays h.

lVhen the distillation and condensation of the ammonia is completed, theinlet-pipe -z' for the cooling-water is removed, and after the supply ofsteam has been cut oil, coolingwater is conducted into the worm 7). Inconsequence of the partial vacuum now arising in the chamber a of theevaporator a, and owing to the absorption of heat from the condenser a,the ammonia which has collected in the trays h is evaporated again. Theconsequent reduction of temperature which occurs is shared directly bythe ribs and the wall of the vessel 9, and by the water contained in thelatter. On freshwater being supplied to the vessel 9, there fore, itwill at once freeze. After removal of the block of ice, the procedureabove de scribed can be commenced anew.

Having thus described my invention, I declare that what I claim is In anice-making machine the combination of two vessels one placed above theother, the lower vessel communicating with the bottom portion of theupper vesseland with a receptacle disposed in one of said vessels,annular upwardly-extending conical ribs projecting from the outer sideof this receptacle, and means for alternately heating and cooling theother vessel, substantially as set forth.

Signed at Barmen, Germany, this 21st day of September, 1909, in thepresence of two witnesses.

CARL SENSSENBRENNER. [L 5.]

Witnesses GUSTAV KIL'rz, CARL HAUSER.

